Question

3) Acerte os coeficientes das reações químicas representadas abaixo. I- S8 + O2 --- > SO2 II- Cl2 + NaBr---> NaCl + Br2 III- Fe + H2O --- > Fe3O4 +H2 IV- NH4NO3 ---> N2 + H2O

Answer 1

num sei

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num sei pq sou do 4°ano

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